It's not just Reagan. The same is happening all over the world, including Europe. And his policies were 40 years ago. At some point, we need to own our own problems.
The real issue is that the rich people worldwide have figured out how to mostly avoid paying taxes, while the middle class bears the brunt of taxation - which prevents them from becoming wealthy - and the lower class gets nothing.
That wasn't Reagan, it would have happened even if FDR had become an immortal vampire and had the New Deal lasted a century.
What we really need is to start taxing the rich and to greatly reduce taxation on the middle class. And we need to really get serious about it.
The US government can spend millions to track down and kill a Shepard in Syria, but they can't find the capital gains on Jeff Bezos portfolio.